Combinatia utilizator/companie nu este autorizata pentru utilizare API. Verificati starea acestuia in Setari -> Utilizatori [1]

This error occurs when your user is not active in FGO API.

Go to FGO - Settings - Users and check if your user is active in API.

Also, check in xConnector - Profile - Connected services - FGO if your VAT Number and Api Key are correct and in the filed you don’t have any blank spaces. 

Example:

With blank space

Without blank space